The Doctor's multipurpose tool features numerous settings. It can open most locks, detect all manner of deadly rays, read bio-signs and can generate sonic waves of great power. It does, however, have a bit of trouble effecting wood...The Doctor has carried many Sonic Screwdrivers of various designs throughout his lifetimes, ranging from a simple silver coloured tube to more complex illuminated and articulated versions. For a while he relinquished the classic hand-held screwdriver in favour of a pair of 'hands-free' Sonic Shades, but now he's upgraded to a brand new model of the ultimate gadget! This latest revision is brighter and more complex than before. Time will tell if it gets the Doctor into more trouble than it helps him out of!